Hi, I repeated the recovery performance test before, and found out that I made a wrong measurement. Using the same steps indicated in the previous email (24GB shared_buffers for my case), the recovery time still significantly improved compared to head from "13 minutes" to "4 minutes 44 seconds" //not 30 seconds. It's expected because the measurement of vacuum execution time (no failover) which I reported in the first email is about the same (although 5 minutes): > HEAD results > 3) 24GB shared_buffers = 14 min 13.598 s > PATCH results > 3) 24GB shared_buffers = 5 min 35.848 s
Reattaching the patch here again. The V5 of the patch fixed the compile error
mentioned before and mainly addressed the comments/advice of Sawada-san.
- updated more accurate comments describing only current behavior, not history
- updated function name: visibilitymap_truncate_prepare()
- moved the setting of values for smgr_{fsm,vm}_nblocks inside the
smgrtruncate()
I'd be grateful if anyone could provide comments, advice, or insights.
Thank you again in advance.
Regards,
Kirk Jamison
v5-0001-Speedup-truncates-of-relation-forks.patch
Description: v5-0001-Speedup-truncates-of-relation-forks.patch
